AU7848891A - Light communication system - Google Patents

Light communication system

Info

Publication number: AU7848891A
Authority: AU; Australia
Prior art keywords: communication system; light communication; light; communication
Prior art date: 1990-06-19
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

AU78488/91A

Other versions

AU632697B2 (en

Inventor

Kohji Nakazato

Izumi Sankawa

Masayuki Shigematsu

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Nippon Telegraph and Telephone Corp

Sumitomo Electric Industries Ltd

Original Assignee

Sumitomo Electric Industries Ltd

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1990-06-19

Filing date

1991-06-18

Publication date

1992-01-02

1991-06-18 Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd

1992-01-02 Publication of AU7848891A publication Critical patent/AU7848891A/en

1993-01-07 Application granted granted Critical

1993-01-07 Publication of AU632697B2 publication Critical patent/AU632697B2/en

2011-06-18 Anticipated expiration legal-status Critical

Status Ceased legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/27—Arrangements for networking
- H04B10/272—Star-type networks or tree-type networks
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Electromagnetism (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Computing Systems (AREA)
Optical Communication System (AREA)
Light Guides In General And Applications Therefor (AREA)
Lasers (AREA)

AU78488/91A 1990-06-19 1991-06-18 Light communication system Ceased AU632697B2 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP2-161077		1990-06-19
JP02161077A JP3100386B2 (en)	1990-06-19	1990-06-19	Optical communication system

Publications (2)

Publication Number	Publication Date
AU7848891A true AU7848891A (en)	1992-01-02
AU632697B2 AU632697B2 (en)	1993-01-07

Family

ID=15728191

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
AU78488/91A Ceased AU632697B2 (en)	1990-06-19	1991-06-18	Light communication system

Country Status (7)

Country	Link
EP (1)	EP0467080B1 (en)
JP (1)	JP3100386B2 (en)
AU (1)	AU632697B2 (en)
CA (1)	CA2044919C (en)
DE (1)	DE69125065T2 (en)
FI (1)	FI103236B (en)
NO (1)	NO308499B1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB9022681D0 (en) *	1990-10-18	1990-11-28	British Telecomm	Passive optical network
CA2069567C (en) *	1991-05-27	2001-10-30	Kazunori Nakamura	Optical amplification apparatus
IT1279126B1 (en) *	1995-04-18	1997-12-04	Sip	BIDIRECTIONAL OPTICAL AMPLIFIER WITH ACTIVE FIBER.
GB9526176D0 (en) *	1995-12-21	1996-02-21	Stc Submarine Systems Ltd	System fibre break detection in systems using ropas
JPH09261187A (en) *	1996-03-19	1997-10-03	Fujitsu Ltd	Remote amplifier and fault point orientation method in no-relay optical transmission system
JP3107033B2 (en) *	1998-03-09	2000-11-06	日本電気株式会社	Optical amplifying device, method of detecting transmission line break point of optical transmission device including the same, and bidirectional wavelength multiplexing optical transmission device using optical amplifying device
BR112012023136A8 (en)	2012-08-29	2020-01-07	Ericsson Telecomunicacoes Sa	device to monitor an optical fiber.
BR112013023723A2 (en) *	2013-03-05	2016-12-13	Ericsson Telecomunicações S A	optical amplifier array
EP2819321A1 (en) *	2013-06-27	2014-12-31	Alcatel Lucent	Packet optical add drop multiplexing node for an optical ring network
WO2021111699A1 (en) *	2019-12-04	2021-06-10	日本電気株式会社	Optical fiber sensing system, relay device, and sensing method
WO2024214272A1 (en) *	2023-04-14	2024-10-17	日本電信電話株式会社	Optical fiber sensing system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS581859B2 (en) *	1975-02-14	1983-01-13	株式会社日立製作所	Hikari Chiyu Keiki
JPS56140257U (en) *	1980-03-24	1981-10-23
JPS5991745A (en) *	1982-11-18	1984-05-26	Yamatake Honeywell Co Ltd	Coupler for optical communication
JPS59188249A (en) *	1984-03-22	1984-10-25	Hitachi Ltd	Optical repeating amplifier
JPH021631A (en) *	1988-06-09	1990-01-05	Fujitsu Ltd	Optical cable communication system

1990
- 1990-06-19 JP JP02161077A patent/JP3100386B2/en not_active Expired - Lifetime
1991
- 1991-06-17 NO NO912327A patent/NO308499B1/en not_active IP Right Cessation
- 1991-06-18 CA CA002044919A patent/CA2044919C/en not_active Expired - Fee Related
- 1991-06-18 EP EP91109963A patent/EP0467080B1/en not_active Expired - Lifetime
- 1991-06-18 AU AU78488/91A patent/AU632697B2/en not_active Ceased
- 1991-06-18 FI FI912962A patent/FI103236B/en active
- 1991-06-18 DE DE69125065T patent/DE69125065T2/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
NO912327L (en)	1991-12-20
JPH0451620A (en)	1992-02-20
NO308499B1 (en)	2000-09-18
AU632697B2 (en)	1993-01-07
CA2044919C (en)	1996-06-11
FI103236B1 (en)	1999-05-14
NO912327D0 (en)	1991-06-17
FI912962A0 (en)	1991-06-18
DE69125065D1 (en)	1997-04-17
EP0467080B1 (en)	1997-03-12
FI103236B (en)	1999-05-14
JP3100386B2 (en)	2000-10-16
FI912962A (en)	1991-12-20
EP0467080A1 (en)	1992-01-22
CA2044919A1 (en)	1991-12-20
DE69125065T2 (en)	1997-06-19

Publication	Publication Date	Title
AU616112B2 (en)	1991-10-17	Optical communication system
AU9096591A (en)	1992-07-22	Optical communications system
AU4860393A (en)	1994-04-14	Optical communication system
EP0477699A3 (en)	1993-09-01	Optical communication system
AU4618393A (en)	1994-03-17	Communication system
EP0412727A3 (en)	1992-01-29	Optical communication system
AU6566490A (en)	1992-06-25	Network communication system
AU4008093A (en)	1993-12-16	Optical network unit
AU7794691A (en)	1991-11-11	Telecommunications system with timed-do-not-disturb
GB9018973D0 (en)	1990-10-17	Optical communications system
AU4017093A (en)	1993-12-23	Optical communication transmission system
AU4337193A (en)	1993-12-30	Optical communication system
AU4717393A (en)	1994-02-14	Free space optical communication system
AU627276B2 (en)	1992-08-20	Light system
AU8532391A (en)	1992-03-30	Light transmitting arrangement
AU6939491A (en)	1991-07-25	Optical transmission system
AU4724589A (en)	1990-08-09	Broadband optical communication system
GB2271236B (en)	1996-03-13	Optical communication system
GB9026898D0 (en)	1991-01-30	Optical communications system
AU3855789A (en)	1991-01-17	Communication system
AU8896791A (en)	1992-06-25	Underwater communication system
AU3522889A (en)	1989-12-14	Optical communication system
AU632697B2 (en)	1993-01-07	Light communication system
AU1565788A (en)	1988-11-17	Optical communication system
AU2358792A (en)	1993-04-01	Optical communications systems

Legal Events

Date	Code	Title	Description
2003-01-23	MK14	Patent ceased section 143(a) (annual fees not paid) or expired